Knowing how to maximise your tax refund in Australia starts with understanding what the ATO actually allows, and most DIY filers miss more than they realise. Many Australians who lodge their own return leave genuine money unclaimed, not because they’re doing anything wrong, but because they don’t know the full extent of what they’re entitled to claim. The 2025, 26 income year has clear, specific rules that, when applied correctly, can meaningfully increase what lands back in your account. This guide walks through every legal strategy worth knowing: from work-related deductions and home-office claims through to tax offsets, investment expenses, and the recordkeeping that holds every claim together.

Tax practitioners, including the team at Tax NextGen, Chartered Accountants and CPAs who specialise exclusively in individual returns, commonly observe the same clusters of missed deductions across different occupations. Most of them are straightforward once you know where to look. By the end of this article, you’ll know which expenses to claim, which offsets reduce your tax liability, and exactly what records the ATO expects to see.

1. Work-related deductions most Australians underestimate

The ATO’s core rule is simple: you must have spent the money yourself, not been reimbursed, and the expense must directly relate to earning your income. That single principle covers a far broader range of costs than most people realise. Ranking them by likely refund impact is the smartest way to prioritise your time.

Vehicle and work-related travel expenses

Work-related vehicle use is consistently the highest-value missed deduction for salaried employees. Ordinary home-to-work commuting doesn’t count, but travel between job sites, to client meetings, to conferences, or to pick up work supplies absolutely does. For 2025, 26, the ATO’s cents-per-kilometre rate is 88 cents per kilometre, capped at 5,000 kilometres per car, a maximum deduction of $4,400 under this method alone. Under the cents-per-kilometre method, you don’t need to retain fuel receipts, though you do need a record showing how you calculated your work-related kilometres (such as a diary or written explanation).

If your work travel exceeds 5,000 kilometres, the logbook method is worth considering. You keep a continuous 12-week logbook recording the date, destination, purpose, and odometer readings for each work trip. That logbook then establishes your business-use percentage, which applies to your actual car running costs for the full year. The upfront effort is real, but the deduction can be substantially larger for high-use vehicles.

Self-education, professional memberships and subscriptions

Self-education costs are deductible when the study directly maintains or improves skills used in your current role. Course fees, textbooks, stationery, and travel to the venue all qualify. These claims are commonly skipped because they seem too small to bother with, but a single postgraduate unit can generate a deduction of $1,000 or more once you add up course fees, required texts, stationery, and travel to the campus.

Professional memberships, trade body fees, and industry subscriptions are also deductible when they’re tied to your work. If your employer requires you to hold a professional registration or association membership, that annual fee is claimable. The same applies to industry journals and specialist publications you use to stay current in your field. These amounts may be modest individually, but collectively they add up.

Clothing, tools and equipment

Generic office wear, suits, and everyday clothing don’t qualify as deductions, regardless of how often you wear them to work. What does qualify is occupation-specific clothing, for example, chef’s whites, hi-vis vests, or a nurse’s uniform, protective gear, and any tools or equipment you purchase and use for work. Items costing $300 or less are deductible in the year you buy them. For items above that threshold, the ATO requires you to depreciate the cost over the asset’s effective life rather than claim the full amount immediately.

2. Working from home: which method gives you a bigger refund in Australia

If you work from home regularly, you have a choice between two ATO-approved methods. The right one depends on your spending pattern and your willingness to keep detailed records throughout the year. Importantly, whichever method you choose applies for the full income year, you cannot switch between them mid-year.

How the fixed rate method works (70 cents per work hour)

The fixed rate for 2025, 26 is 70 cents per hour worked from home. It covers electricity, phone usage, internet, stationery, and computer consumables as a bundled rate. You cannot claim those costs separately on top of the hourly rate, but you don’t need a dedicated home office room to use this method.

The catch is that the ATO does not accept estimates for hours worked from home. You need a contemporaneous record covering the full income year: timesheets, work rosters, a daily diary, or equivalent documentation that shows actual hours, not a rough weekly average extrapolated backwards at tax time. You also need at least one bill or receipt for each type of expense covered by the rate, such as an electricity bill and a phone account statement.

When the actual cost method delivers more

The actual cost method calculates the work-related proportion of every genuine home-office expense separately. This includes electricity, phone, internet, depreciation on work equipment, and any other running costs you can apportion between work and private use. If your home-office running costs are high relative to your hours, or you’ve purchased significant equipment, this method can produce a larger deduction than the fixed rate.

The trade-off is documentation. You need itemised receipts, bills, and a written apportionment calculation for each expense. The ATO expects clear evidence of how you worked out the work-versus-private split. This method suits people who work from home for a substantial portion of their week and have the records to support each claim.

3. Tax offsets and rebates that quietly reduce what you owe

Tax offsets reduce your tax payable dollar-for-dollar, which makes them more powerful than deductions of the same value. A $700 deduction reduces your taxable income and saves you tax at your marginal rate. A $700 offset cuts your tax bill by $700 directly. The key limitation is that most offsets are non-refundable: they can reduce your tax liability to zero but cannot push your refund above what was already withheld.

Low Income Tax Offset (LITO) and how it tapers

For 2025, 26, LITO has a maximum value of $700 for taxpayers with taxable income at or below $37,500. It tapers by 5 cents per dollar between $37,500 and $45,000, then by 1.5 cents per dollar until it phases out entirely at $66,667. If deductions bring your taxable income below $66,667, you may receive more LITO than your PAYG withholding already factored in, which flows through as a larger refund at assessment.

Part-time workers, those returning from parental leave, and anyone with significant work-related deductions that reduce their taxable income stand to benefit most from understanding where they sit on the LITO taper. It’s worth checking your estimated taxable income before you lodge, rather than leaving this as a surprise at assessment.

Medicare levy threshold and what it means for your refund

The Medicare levy is 2% of your taxable income, but lower-income earners pay less or nothing at all. For 2025, 26, the low-income threshold for singles is $26,000. If your taxable income falls below that figure after deductions, the levy is eliminated entirely, which directly increases your net refund. For taxpayers sitting just above the threshold, even modest deductions can shift the calculation.

It’s also worth noting that a new standard deduction for work-related expenses has been proposed for 2026, 27, not the current income year. For 2025, 26, the existing itemised deduction rules apply. Every dollar of legitimate work-related expense you claim this year must still be substantiated in the usual way.

4. Investment and other claimable expenses beyond your regular job

Investment-related deductions are frequently overlooked because individual taxpayers assume they’re “for businesses.” They’re not. The ATO specifically allows individuals to claim expenses incurred in earning investment income, and for property investors in particular, the amounts involved are often substantial.

Rental property and negative gearing deductions

The main deductible rental property expenses include loan interest, property management fees, council rates, water rates, insurance, repairs and maintenance, advertising for tenants, and body corporate levies. Depreciation on the building itself and on fixtures and fittings requires a quantity surveyor’s depreciation schedule, typically a one-off cost that, for properties with multiple depreciable items, can be economical relative to the cumulative deductions it unlocks over time.

Negative gearing applies when your total deductible rental expenses exceed your rental income. That net loss reduces your taxable income from other sources, including your salary. The classification of repairs versus capital improvements is a common source of errors. General repairs that restore something to its original condition are immediately deductible. Improvements that add new value must be depreciated over time. Getting this distinction right matters at audit.

Charitable donations and personal super contributions

Donations to ATO-endorsed deductible gift recipients (DGRs) are fully deductible with no minimum threshold, provided the organisation holds DGR status. Charities, public hospitals, and environmental funds are among the organisations that commonly hold DGR status. A quick check on the ATO’s ABN Lookup tool confirms this before you claim.

If you’ve made after-tax personal contributions to your super fund, you may be able to claim a deduction for those amounts. The process requires you to lodge a valid notice of intent to claim with your fund before you submit your tax return, and your fund must acknowledge it. The contribution cap applies, so check the current limits before relying on this strategy. For eligible taxpayers, particularly those with variable income or a one-off windfall, this can be one of the more valuable deductions available.

5. Recordkeeping rules the ATO won’t bend on

Every claim in this article is only as strong as the evidence behind it. The ATO can and does disallow legitimate deductions at audit when records are missing or insufficient. Understanding exactly what’s required protects every dollar you claim.

The $300 threshold and what written evidence actually means

If your total work-related deductions exceed $300, written evidence is mandatory for every dollar claimed. Not just the amount above $300: every dollar. Written evidence means a receipt, invoice, or bank statement with a clear description of the expense. Below $300, you don’t need written evidence, but you still need a record showing how you calculated the claim. The widespread belief that “$300 can always be claimed without any paperwork” is incorrect and can result in adjustments at assessment.

How long to keep your records (the 5-year rule)

The standard rule is five years from the date you lodge your return. For depreciating assets, records must be kept for five years from the date of your last depreciation claim on that asset. For CGT assets such as shares or investment property, records must be kept for five years after it becomes certain that no CGT event can occur for that asset. If you’re in a dispute with the ATO, extend that period to five years from the resolution of the dispute.

The practical solution is a single organised folder, digital or physical, for each income year. Scan receipts as you incur them and store them alongside your lodgement confirmation. Five years sounds like a long time until the ATO sends a review letter for a return lodged several years prior.

6. What a registered tax agent finds that you’ve likely missed

The sections above cover the rules accurately, but applying them to your specific occupation, income mix, and asset profile is a different exercise. Employees in complex industries, investors with multiple properties, and anyone with a mix of income sources are among those most likely to benefit from specialist guidance. The more varied your situation, the more likely a DIY return misses something the ATO allows.

Where DIY filers commonly leave money behind

Tax practitioners commonly observe patterns such as employees using the cents-per-kilometre method when a logbook would produce a substantially larger deduction, workers in trades and healthcare who overlook occupation-specific clothing claims, and investment property owners who skip depreciation schedules because they didn’t know one was available. Tax software asks basic questions and processes the answers you give it. It doesn’t know your industry, your working pattern, or your asset history in the way a specialist does.

One conversation can change what you walk away with

Tax NextGen is a Melbourne-based team of Chartered Accountants and CPAs who specialise exclusively in individual returns, covering everything from salary income to rental properties, crypto, and capital gains events. The service operates entirely by phone and offers a free initial consultation, a maximum refund guarantee, and aims to lodge the majority of returns promptly. You work with one consistent consultant throughout, with services available in multiple languages and transparent pricing from the start.

If you want to know what your return is actually worth before you lodge it, book a free consultation at Tax NextGen. It takes one call and could make a meaningful difference to your refund.

The bottom line: how to maximise your tax refund in Australia

Maximising your tax refund in Australia isn’t about gaming the system. It’s about knowing the ATO’s rules well enough to claim what you’re genuinely entitled to. The five areas covered here, work-related expenses, home-office claims, tax offsets, investment deductions, and recordkeeping, represent the most consistent opportunities available to individual taxpayers in 2025, 26.

Evidence is everything. A legitimate deduction without supporting records is a deduction waiting to be disallowed. Start your recordkeeping habits now, even if lodgement is months away. And if your situation involves multiple income streams, a rental property, crypto transactions, or significant work expenses, the cost of a registered tax agent is almost always recovered in the deductions they surface.

The next step is straightforward: understand what you’re entitled to, gather your records, and lodge with confidence. Follow these steps to maximise your tax refund in Australia, or if you’d rather have a Chartered Accountant do that work for you, Tax NextGen is ready to take your call.